Combining Texts

Ideas for 'Parmenides', 'A Priori Knowledge Revisited' and 'Reflections on Liberty and Social Oppression'

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4 ideas

5. Theory of Logic / A. Overview of Logic / 6. Classical Logic

12430	Classical logic is our preconditions for assessing empirical evidence [Kitcher]
	Full Idea: In my terminology, classical logic (or at least, its most central tenets) consists of propositional preconditions for our assessing empirical evidence in the way we do.
	From: Philip Kitcher (A Priori Knowledge Revisited [2000], §VII)
	A reaction: I like an even stronger version of this - that classical logic arises out of our experiences of things, and so we are just assessing empirical evidence in terms of other (generalised) empirical evidence. Logic results from induction. Very unfashionable.

12431	I believe classical logic because I was taught it and use it, but it could be undermined [Kitcher]
	Full Idea: I believe the laws of classical logic, in part because I was taught them, and in part because I think I see how those laws are used in assessing evidence. But my belief could easily be undermined by experience.
	From: Philip Kitcher (A Priori Knowledge Revisited [2000], §VII)
	A reaction: Quine has one genuine follower! The trouble is his first sentence would fit witch-doctoring just as well. Kitcher went to Cambridge; I hope he doesn't just believe things because he was taught them, or because he 'sees how they are used'!

5. Theory of Logic / L. Paradox / 3. Antinomies

13986	Plato found antinomies in ideas, Kant in space and time, and Bradley in relations [Plato, by Ryle]
	Full Idea: Plato (in 'Parmenides') shows that the theory that 'Eide' are substances, and Kant that space and time are substances, and Bradley that relations are substances, all lead to aninomies.
	From: report of Plato (Parmenides [c.364 BCE]) by Gilbert Ryle - Are there propositions? 'Objections'

14150	Plato's 'Parmenides' is perhaps the best collection of antinomies ever made [Russell on Plato]
	Full Idea: Plato's 'Parmenides' is perhaps the best collection of antinomies ever made.
	From: comment on Plato (Parmenides [c.364 BCE]) by Bertrand Russell - The Principles of Mathematics §337